Silicone Valve

Silicone Diaphragm Valve


FDA approved food grade silicone materials

Custom silicone diaphragm valves 

No need to open the lid while in Microwaving

Free samples available for testing

Factory price, low MOQ, fast delivery

Daily capacity reaches to 200,000pcs per automation production line



Specification Of Food Grade Silicone Membrane Valve 

Product NameManufacture FDA Approved Food Grade Silicone Diaphragm Valve For Microwave Lunch Box
Model NumberHHSV16
MaterialEco-friendly FDA Approved Silicone
Color Customize Colors
Hardness40 Shore A
Outer Diameter18.4mm
Slit Cut TypeCross Slit Cut, Welcome To Customize Other Slit Cut Type
Slit Cut Size5*5mm
Mold TypeVacuum Compression Molding
ProcessTool Design - Tool Manufacturing - Compression Molding - Whole Piece Inspection - Punching Slit Cut - Add Talcum Powder - Punching Shape  - Quality Checking - Dust Free Packing - Shipping
MoldPrivate Mold
MOQ50,000 PCS
Daily Capacity200,000pcs/ Line
Mold CavityCustomize
WorkshopClass 100,000 Clean Production Workshop And Silicone Valves Special Production Workshop

Silicone Diaphragm Valves Can Be Used For Microwave Lunch Box

IntercomsEXW, FOB, CIF, DDP, Or Delivery To Assembly China Factories


  • Lunch Box

    Lunch Box

  • Preservation Box

    Preservation Box

Product Information

What Is Silicone Diaphragm Valve?

Silicone diaphragm valves are also called silicone air inlet valves and silicone air outlet valves, made of FDA approved eco-friendly food grade silicone, with leak proof and flow control function, can be used for Microwave lunch box.

Silicone Air Inlet Valve and Air Outlet Valve

The Advantages Of Silicone Diaphragm Valve ?

1. Air outlet silicone diaphragm valve made of FDA approved food grade silicone material, with good pulling force and elasticity.

2. FDA approved silicone diaphragm valves have passed 7 days* 24 hours Inverted Leak-proof Test.

3. Silicone diaphragm valves with zero clearance and non stick slit cut.

4. Silicone diaphragm valves tolerance of the curved wall thickness is controlled within 0.03mm, dispensing angle is controled within ± 30 degree。

5. One squeeze, one dispensing, no leakage, no extra splits.

6. Non toxic and odorless, not yellowing.

7. High and low temperature resistance, wear resistance, and long service life.

Silicone Air Inlet Valve and Air Outlet Valve

The Information Of Silicone Diaphragm Valves In Public Mold

Item NameO.D.Slit TypeHardnessSlit SizeMatched Plastic Valve Seat O.D
8mm Silicone Valve8mmcross slit20 Shore A1.5*1.5/ 2*2/ 3*3mm/
9.8mm Silicone Valve9.8mmcross slit/ snowflake/ asterisk30 Shore A2.1*2.1/3*3/3.6*3.6/5*5mm11.85mm
10.5mm Silicone Valve10.5mmcross slit30 Shore A3*3/ 5*5mm12.3mm
13mm Silicone Valve13mmcross slit30 Shore A5.5*5.5mm14.6mm
16.5mm Silicone Valve16.5mmcross slit30 Shore A3*3/5*5/6.5*6.5/7.8*7.8mm18.6mm
12.5mm Silicone Duckbill Valve
12.5mmduckbill slit50 Shore A5.4*5.4mm/
33mm NSF Valve33mmcross slit40 Shore A5.5*5.5mm/
84mm Silicone Fermentation Lid84mmduckbill slit50 Shore A5.4*5.4mm/

Silicone Air Inlet Valve and Air Outlet Valve

Silicone Air Inlet Valve and Air Outlet Valve

Comparison Of Silicone Diaphragm Valve With Different Qualities

Silicone Air Inlet Valve and Air Outlet Valve

If you are interested in silicone diaphragm valves, please feel free to contact us, thanks.

Manufacturing Process

Process Of Food Grade Silicone Diaphragm Valve     

Tool Design - Tool Manufacturing - Compression Molding - Whole Piece Inspection - Punching Slit Cut - Add Talcum Powder - Punching Shape  - Quality Checking - Dust Free Packing - Shipping

Silicone Air Inlet Valve and Air Outlet Valve


Packing Of Good Sealing Silicone Diaphragm Valve 

For flow control silicone diaphragm valve, to keep the product clean and not deformed while in transportation and in storage, normally, the packaging as follow: 

Item NamePCS/ PE BagPCS/ CartonCarton SizeN.W.G.W.
Leak Proof Silicone Diaphragm Valve 5,000pcs100,000pcs35*26*42CM8.5KG9.5KG

Silicone Air Inlet Valve and Air Outlet Valve


  • 1

    Are you a manufacturer or a trading company?

    We're a manufacturer of silicone molding products, with about 10,000 square meters production workshops.

  • 2

    Can you provide free samples?

    Free samples can be provided for quality checking, freight cost need be charged.

  • 3

    What are the advantages of Hopewell to preduce silicone valves?

    Hopewell started producing silicone valves in 2011, we also have professional engineering team, precision mold manufacturing department and perfect quality control department, a 100,000-level clean production workshop, and has passed ISO9001, ISO13485, IATF16949 and ISO14001 certifications.

  • 4

    What is your MOQ for silicone valve?

    Our moq is 50000 pcs for four sizes cross slit silicone valves in public mold; for customized silicone products, the final quotation shall prevail.

  • 5

    Can you accept OEM/ ODM orders?

    Currently we only accept OEM orders.

  • 6

    What information do I need to provide for custom silicone valves?

    Please provide 2D and 3D drawings (STP format) or actual samples, then our engineering team will provide DFM for your confirmation.

  • 7

    What is the lead time for custom silicone valves?

    For prototype molds, the lead time for silicone valves is about 7-15 working days; for production molds, the lead time is about 15-45 working days.

  • 8

    Can I use your silicone valves mold?

    We only have four cross slit silicone valves mold can be used, other molds are customized by other customers.

  • 9

    Can you provide proof of raw materials?

    Yes, we can provide MSDS, FDA, LFGB test reports for confirmation.

  • 10

    Can you provide plastic valve seat samples?

    We have 4 sizes plastic valve seats in public mold, the outer diameters are 11.85mm, 12.3mm, 14.6mm and 18.6mm. Free samples are available, please contact us for more information.

  • 11

    Can i vist your factory?

    Of course, highly welcome.

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